Buggy code:
public class Main { public static String verb ; public static String subject ; public static String withCheck ; public static int withIndex ; public static String object ; public static World world ; public static ArrayList < Item > spawned ; public static void main ( String [ ] args ) { File dir = new File ( ( ( System . getenv ( "APPDATA" ) ) + "\\abdjekt\\" ) ) ; dir . mkdir ( ) ; Scanner keyboard = new Scanner ( System . in ) ; Main . spawned = new ArrayList < Item > ( ) ; Main . spawned . add ( new Item ( "foo" ) ) ; <START_BUG> Main . world = new World ( 25 ) ; <END_BUG> File file = new File ( ( ( System . getenv ( "APPDATA" ) ) + "\\abdjekt\\foo.abj" ) ) ; System . out . println ( "Welcome<seq2seq4repair_space>to<seq2seq4repair_space>Abdjekt!" ) ; System . out . println ( "To<seq2seq4repair_space>spawn<seq2seq4repair_space>an<seq2seq4repair_space>object,<seq2seq4repair_space>use:<seq2seq4repair_space>spawn<seq2seq4repair_space><noun>.<seq2seq4repair_space>To<seq2seq4repair_space>remove<seq2seq4repair_space>them,<seq2seq4repair_space>use:<seq2seq4repair_space>remove<seq2seq4repair_space><noun>" ) ; System . out . println ( "To<seq2seq4repair_space>look<seq2seq4repair_space>at<seq2seq4repair_space>what<seq2seq4repair_space>you<seq2seq4repair_space>have<seq2seq4repair_space>spawned,<seq2seq4repair_space>type:<seq2seq4repair_space>look." ) ; System . out . println ( "To<seq2seq4repair_space>remove<seq2seq4repair_space>everything<seq2seq4repair_space>that<seq2seq4repair_space>is<seq2seq4repair_space>spawned,<seq2seq4repair_space>type:<seq2seq4repair_space>clean." ) ; System . out . println ( "The<seq2seq4repair_space>syntax<seq2seq4repair_space>for<seq2seq4repair_space>commands<seq2seq4repair_space>is<seq2seq4repair_space><verb><seq2seq4repair_space><noun><seq2seq4repair_space>with<seq2seq4repair_space><noun>." ) ; System . out . println ( "To<seq2seq4repair_space>quit<seq2seq4repair_space>the<seq2seq4repair_space>game,<seq2seq4repair_space>simply<seq2seq4repair_space>type<seq2seq4repair_space>'quit'." ) ; System . out . println ( "There<seq2seq4repair_space>are<seq2seq4repair_space>two<seq2seq4repair_space>gamemodes:<seq2seq4repair_space>sandbox<seq2seq4repair_space>and<seq2seq4repair_space>hardcore." ) ; System . out . println ( "In<seq2seq4repair_space>sandbox<seq2seq4repair_space>you<seq2seq4repair_space>can<seq2seq4repair_space>spawn<seq2seq4repair_space>and<seq2seq4repair_space>do<seq2seq4repair_space>whatever<seq2seq4repair_space>you<seq2seq4repair_space>want,<seq2seq4repair_space>within<seq2seq4repair_space>the<seq2seq4repair_space>bounds<seq2seq4repair_space>of<seq2seq4repair_space>the<seq2seq4repair_space>current<seq2seq4repair_space>content." ) ; System . out . println ( "In<seq2seq4repair_space>hardcore,<seq2seq4repair_space>there<seq2seq4repair_space>are<seq2seq4repair_space>limits<seq2seq4repair_space>to<seq2seq4repair_space>what<seq2seq4repair_space>you<seq2seq4repair_space>can<seq2seq4repair_space>spawn,<seq2seq4repair_space>you<seq2seq4repair_space>have<seq2seq4repair_space>to<seq2seq4repair_space>obtain<seq2seq4repair_space>them<seq2seq4repair_space>from<seq2seq4repair_space>the<seq2seq4repair_space>environment,<seq2seq4repair_space>and<seq2seq4repair_space>crafting." ) ; System . out . println ( "To<seq2seq4repair_space>change<seq2seq4repair_space>the<seq2seq4repair_space>gamemode,<seq2seq4repair_space>type<seq2seq4repair_space>'mode<seq2seq4repair_space>1'<seq2seq4repair_space>(sandbox)<seq2seq4repair_space>or<seq2seq4repair_space>'mode<seq2seq4repair_space>2'<seq2seq4repair_space>(hardcore).<seq2seq4repair_space>The<seq2seq4repair_space>game<seq2seq4repair_space>starts<seq2seq4repair_space>on<seq2seq4repair_space>hardcore." ) ; System . out . println ( "This<seq2seq4repair_space>game<seq2seq4repair_space>is<seq2seq4repair_space>NOT<seq2seq4repair_space>case-sensative." ) ; System . out . println ( "Please<seq2seq4repair_space>send<seq2seq4repair_space>us<seq2seq4repair_space>suggestions<seq2seq4repair_space>at<seq2seq4repair_space>kicneoj@gmail.com!" ) ; System . out . println ( "NOTE:<seq2seq4repair_space>This<seq2seq4repair_space>programme<seq2seq4repair_space>requires<seq2seq4repair_space>an<seq2seq4repair_space>internet<seq2seq4repair_space>connetion!" ) ; System . out . println ( ) ; if ( ( Double . parseDouble ( Game . getClientVersion ( ) ) ) < ( Double . parseDouble ( Game . getCurrentVersion ( ) ) ) ) { System . out . println ( "IMPORTANT:<seq2seq4repair_space>YOU\'RE<seq2seq4repair_space>CLIENT<seq2seq4repair_space>IS<seq2seq4repair_space>OUT<seq2seq4repair_space>OF<seq2seq4repair_space>DATE!\nDOWNLOAD<seq2seq4repair_space>THE<seq2seq4repair_space>NEWEST<seq2seq4repair_space>VERSION<seq2seq4repair_space>AT<seq2seq4repair_space>http:////kicneoj.webs.com//abdjekt//download.html" ) ; System . out . println ( ) ; } Game . printNews ( ) ; System . out . println ( ) ; while ( true ) { System . out . print ( "><seq2seq4repair_space>" ) ; String inputLine = keyboard . nextLine ( ) ; Scanner inputsplit = new Scanner ( inputLine ) ; String [ ] inputArray = new String [ 6 ] ; for ( int i = 0 ; i < ( inputArray . length ) ; i ++ ) { try { inputArray [ i ] = inputsplit . next ( ) . toLowerCase ( ) ; } catch ( NoSuchElementException eo ) { } } Main . verb = inputArray [ 0 ] ; int withCounter = 0 ; Main . withIndex = - 1 ; for ( int i = 2 ; i <= ( ( inputArray . length ) - 1 ) ; i ++ ) { if ( ( ( inputArray [ i ] ) != null ) && ( inputArray [ i ] . equals ( "with" ) ) ) { Main . withCheck = inputArray [ i ] ; withCounter ++ ; Main . withIndex = i ; } } if ( ( Main . withIndex ) == ( - 1 ) ) { Main . subject = inputArray [ 1 ] ; if ( ( ( inputArray [ 2 ] ) != null ) && ( ! ( inputArray [ 2 ] . equals ( "" ) ) ) ) { Main . subject += "<seq2seq4repair_space>" + ( inputArray [ 2 ] ) ; } } else { if ( ( Main . withIndex ) >= 2 ) { Main . subject = inputArray [ 1 ] ; if ( ( Main . withIndex ) == 3 ) { Main . subject += "<seq2seq4repair_space>" + ( inputArray [ 2 ] ) ; } } } if ( ( Main . withIndex ) == ( - 1 ) ) { Main . object = "" ; } else { Main . object = inputArray [ ( ( Main . withIndex ) + 1 ) ] ; if ( ( inputArray [ ( ( Main . withIndex ) + 2 ) ] ) != null ) { Main . object += "<seq2seq4repair_space>" + ( inputArray [ ( ( Main . withIndex ) + 2 ) ] ) ; } } if ( withCounter >= 2 ) { System . out . println ( "Invalid<seq2seq4repair_space>syntax." ) ; continue ; } if ( ( Main . verb ) == null ) { System . out . println ( "Do<seq2seq4repair_space>what?" ) ; continue ; } if ( Main . verb . equals ( "quit" ) ) { break ; } if ( Main . verb . equals ( "clean" ) ) { Main . world . clear ( ) ; System . out . println ( "Everything<seq2seq4repair_space>around<seq2seq4repair_space>you<seq2seq4repair_space>disappears<seq2seq4repair_space>in<seq2seq4repair_space>a<seq2seq4repair_space>flash<seq2seq4repair_space>of<seq2seq4repair_space>light." ) ; continue ; } if ( ( ( Main . subject ) == null ) && ( ! ( Main . verb . equals ( "look" ) ) ) ) { System . out . println ( ( ( Main . verb ) + "<seq2seq4repair_space>what?" ) ) ; continue ; } if ( ( ( ( ( ! ( Main . verb . equals ( "spawn" ) ) ) && ( ! ( Main . verb . equals ( "remove" ) ) ) ) && ( ! ( Main . verb . equals ( "look" ) ) ) ) && ( ! ( Main . verb . equals ( "mode" ) ) ) ) && ( ! ( Main . verb . equals ( "make" ) ) ) ) { if ( ( Main . withCheck ) == null ) { System . out . println ( "Invalid<seq2seq4repair_space>syntax." ) ; continue ; } }

Fix:
Main . world = new World ( 3 ) ;